Question

The amount that a bungee cord stretches varies directly with the weight that it holds. If a certain cord is stretched 12 in by an object weighing 30 lbs, how much would it be stretched by a different object weighing 23 lb?

Answer 1

Answer: 4.5 metres

Explanation:

Using Hooke's Law ()

We need to find the spring constant of the bungee cord with the given extension and force, we can do this by substituting in known values.

Now we have found the spring constant of the bungee cord, we can substitute it in for the a different force. As the cord is the same we can use the same spring constant.